Knol, Google's knowledge repository, has recently improved the way articles are interlinked. When you create a link, Knol shows search results for the selected text, promoting its own content.
Some knols include an automatically-generated list of related knols in the sidebar:
Unfortunately, it's hard to find high-quality articles other than the knols featured on the homepage. The top search results for [Yahoo], [marine biology], [Alan Turing] and many other popular queries are articles copied from Wikipedia. Knol could easily filter these articles from search results, especially considering that Wikipedia has a conflicting license.
Did you spot any interesting knols? I found a well-documented history of Arctic explorers, a tutorial about photography composition and an introduction to usability.
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